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21.
肖忠华 《宁波大学学报(人文科学版)》1998,(1)
文章探讨政府采用“掺配调节”时进口商所面临的激励机制,分析在竞争性国内产业和国内垄断生产厂商的情况下这些限制的影响,然后再对“掺配调节”与作为达到各种政策目标的其他政策工具作一比较,在此基础上指出“掺配调节”对我国的借鉴意义。 相似文献
22.
We derive a non-parametric test for testing the presence of V(Xi ,εi ) in the non-parametric first-order autoregressive model Xi+1 =T(Xi )+V(Xi ,εi )+U(Xi )εi+1 , where the function T(x) is assumed known. The test is constructed as a functional of a basic process for which we establish a weak invariance principle, under the null hypothesis and under stationarity and mixing assumptions. Bounds for the local and non-local powers are provided under a condition which ensures that the power tends to one as the sample size tends to infinity.The testing procedure can be applied, e.g. to bilinear models, ARCH models, EXPAR models and to some other uncommon models. Our results confirm the robustness of the test constructed in Ngatchou Wandji (1995) and in Diebolt & Ngatchou Wandji (1995). 相似文献
23.
MAGNUS EKSTRÖM 《Scandinavian Journal of Statistics》2008,35(1):38-63
ABSTRACT. Most proposed subsampling and resampling methods in the literature assume stationary data. In many empirical applications, however, the hypothesis of stationarity can easily be rejected. In this paper, we demonstrate that moment and variance estimators based on the subsampling methodology can also be employed for different types of non-stationarity data. Consistency of estimators are demonstrated under mild moment and mixing conditions. Rates of convergence are provided, giving guidance for the appropriate choice of subshape size. Results from a small simulation study on finite-sample properties are also reported. 相似文献
24.
S. P. Brooks 《Statistics and Computing》1998,8(3):267-274
Yu (1995) provides a novel convergence diagnostic for Markov chain Monte Carlo (MCMC) which provides a qualitative measure of mixing for Markov chains via a cusum path plot for univariate parameters of interest. The method is based upon the output of a single replication of an MCMC sampler and is therefore widely applicable and simple to use. One criticism of the method is that it is subjective in its interpretation, since it is based upon a graphical comparison of two cusum path plots. In this paper, we develop a quantitative measure of smoothness which we can associate with any given cusum path, and show how we can use this measure to obtain a quantitative measure of mixing. In particular, we derive the large sample distribution of this smoothness measure, so that objective inference is possible. In addition, we show how this quantitative measure may also be used to provide an estimate of the burn-in length for any given sampler. We discuss the utility of this quantitative approach, and highlight a problem which may occur if the chain is able to remain in any one state for some period of time. We provide a more general implementation of the method to overcome the problem in such cases. 相似文献
25.
This paper studies general sufficient conditions for the geometric ergodicity and the existence of moments for a class of nonlinear autoregressive models with nonlinear ARCH errors. Applications of these conditions to various well-known nonlinear time series models yield specific sufficient conditions, many of which are new or generalizations of existing conditions. 相似文献
26.
Janes Galambos 《统计学通讯:理论与方法》2013,42(7):2211-2221
With a set X1, X2, .... Xn n random variables, a graph is associated whose vertices are the integers 1,2,..., n and whose edges represent those pairs i and j for which the events {Xi>X} and {Xj>X} do not become “almost independent” for “large X”. With a variety of assumption on the edge set of the graph, the asymptotic distribution of the extremes of the Xj, when properly normalized, is determined. This refines the earlier result of the present author on this kind of dependence, and extends and unifies several known dependent extreme value models. 相似文献
27.
用标准贯人法、取芯强度试验等方法对某工程深层搅拌桩质量进行检测,并与原状土对比分析,提出了标贯击数与强度的经验公式。 相似文献
28.
王娜 《河北理工大学学报(社会科学版)》2006,6(1):193-195
<我爱比尔>是王安忆九十年代的小说,此前对这本小说的解读多局限在女性主义批评的视角,而忽略了它的文化批评.引入后殖民批评的一些范式,认为在九十年代东西文化冲突的特殊背景下,小说是一场文化战争的巨大隐喻,通过对主人公放弃本国传统进入西方社会这条道路的否定,王安忆倡导的是对本国传统文化的珍视,以及现代多元文化并存中的"和而不同"原则. 相似文献
29.
Non-parametric Regression with Dependent Censored Data 总被引:1,自引:0,他引:1
Abstract. Let ( X i , Y i ) ( i = 1 ,…, n ) be n replications of a random vector ( X , Y ), where Y is supposed to be subject to random right censoring. The data ( X i , Y i ) are assumed to come from a stationary α -mixing process. We consider the problem of estimating the function m ( x ) = E ( φ ( Y ) | X = x ), for some known transformation φ . This problem is approached in the following way: first, we introduce a transformed variable , that is not subject to censoring and satisfies the relation , and then we estimate m ( x ) by applying local linear regression techniques. As a by-product, we obtain a general result on the uniform rate of convergence of kernel type estimators of functionals of an unknown distribution function, under strong mixing assumptions. 相似文献
30.
M'hamed Ezzahrioui 《统计学通讯:理论与方法》2013,42(17):2735-2759
We consider the estimation of the conditional quantile function when the covariates take values in some abstract function space. The main goal of this article is to establish the almost complete convergence and the asymptotic normality of the kernel estimator of the conditional quantile under the α-mixing assumption and on the concentration properties on small balls of the probability measure of the functional regressors. Some applications and particular cases are studied. This approach can be applied in time series analysis to the prediction and building of confidence bands. We illustrate our methodology with El Niño data. 相似文献